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Re: [Xen-devel] [PATCH v2 4/4] xen/netback: fix grant copy across page boundary
- To: Paul Durrant <pdurrant@xxxxxxxxx>
- From: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
- Date: Wed, 22 Jan 2020 10:07:35 +0000
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- Cc: Juergen Gross <jgross@xxxxxxxx>, "sergey.dyasli@xxxxxxxxxx >> Sergey Dyasli" <sergey.dyasli@xxxxxxxxxx>, Wei Liu <wei.liu@xxxxxxxxxx>, Stefano Stabellini <sstabellini@xxxxxxxxxx>, Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>, George Dunlap <george.dunlap@xxxxxxxxxx>, linux-kernel@xxxxxxxxxxxxxxx, kasan-dev@xxxxxxxxxxxxxxxx, xen-devel@xxxxxxxxxxxxx, linux-mm@xxxxxxxxx, Alexander Potapenko <glider@xxxxxxxxxx>, Andrey Ryabinin <aryabinin@xxxxxxxxxxxxx>, Boris Ostrovsky <boris.ostrovsky@xxxxxxxxxx>, Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>, Dmitry Vyukov <dvyukov@xxxxxxxxxx>
- Delivery-date: Wed, 22 Jan 2020 10:07:49 +0000
- Ironport-sdr: vMRjz/muvrzwffZ9gPdAkzOUaYy9fd6F78rjNgWjA+E4IrmOT4iUvZoLuMWmHiiID1Own4xeCv TTEFoxCLO0ynfKfwXsKjsen+Q6U5ExT5FZj3v02meT9wHVyfNOIz7Q5wFMv/c9/i8H5OaNDmvh nlai6MElcKtJaJBzKeVUrv4MtVGjtptShv3QnmR/wz4kQ7WeRURg83hdt8nY+TiAp6YU0W8zjv GaNx5omxl14S8EncuOU9JVydX0d78Q3ZKy+JOzG90YjDhFWXZurtNmqEGkNbT7kfgdQmV7EuBz H1o=
- List-id: Xen developer discussion <xen-devel.lists.xenproject.org>
On 20/01/2020 08:58, Paul Durrant wrote:
> On Fri, 17 Jan 2020 at 12:59, Sergey Dyasli <sergey.dyasli@xxxxxxxxxx> wrote:
>>
>> From: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
>>
>> When KASAN (or SLUB_DEBUG) is turned on, there is a higher chance that
>> non-power-of-two allocations are not aligned to the next power of 2 of
>> the size. Therefore, handle grant copies that cross page boundaries.
>>
>> Signed-off-by: Ross Lagerwall <ross.lagerwall@xxxxxxxxxx>
>> Signed-off-by: Sergey Dyasli <sergey.dyasli@xxxxxxxxxx>
>> ---
>> v1 --> v2:
>> - Use sizeof_field(struct sk_buff, cb)) instead of magic number 48
>> - Slightly update commit message
>>
>> RFC --> v1:
>> - Added BUILD_BUG_ON to the netback patch
>> - xenvif_idx_release() now located outside the loop
>>
>> CC: Wei Liu <wei.liu@xxxxxxxxxx>
>> CC: Paul Durrant <paul@xxxxxxx>
>
> Acked-by: Paul Durrant <paul@xxxxxxx>
Thanks! I believe this patch can go in independently from the other
patches in the series. What else is required for this?
--
Sergey
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